These eco-conscious towels feature our groundbreaking, patented silicon nub Skidless technology, and will grip your mat and help prevent slipping no matter how much you move or sweat. 100% silicone dots grip and keep towel in place on your mat, floor, or carpet. 50% recycled fiber content means towels require 2/3 less energy to produce. Each towel is made using 8 recycled plastic bottles. All dyes are AZO, lead, and heavy-metal free.